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Total Price for 3 items $47.47

Product Specifications

Manufacturer: BioGuard
BioGuard Item Number: 23500BIO Item Number: 23500
UPC/GTIN: 017541611329
Condition: New

Product Information

Introducing a fast-acting, highly effective, patented, low foaming algaecides that produces results in 24 hours. Banish kills all types of algae in swimming pools. Banish contains a patented chelant that prevents staining that commonly occurs with other copper-based algaecides. Banish is formulated for use in chlorine or bromine sanitized swimming pools of all surface and filter types.  It does not affect pH.

Product Benefits:

  • Non-foaming
  • Fast acting on all types of algae
  • Does not effect pH
  • Works at normal pH levels
  • Works with chlorine or bromine pools
  • Does not destabilize chlorine or create a demand
  • Can shock for demands during treatment, without staining
  • Results within 24 hours
  • Patented non-staining formula
  • Multi functional formula clears water 

Dosage Directions:

  • Clean filter and adjust pH to 7.2-7.6
  • Vacuum leaves and debris from pool
  • Brush visible algae thoroughly
  • Add 1 lb. of Burn Out per 10,000 gallons of water
  • Circulate pool for 1 hour
  • With the pool running add 16 oz. of Banish per 10,000 gallons of water
  • Circulate pool water for 24 hours
  • Swimmers may reenter pool when chlorine residual is below 3.0 ppm
  • Brush pool surfaces
  • In cases of persistent algae, repeat application after 2-4 days
  • The use of a filter aid will enhance filter efficiency and algae removal
  • DO NOT add filter aid until at least 72 hours after Banish application
  • DO NOT use in pools with ionizers or pools treated with biguanide or hydrogen peroxide

BioGuard Item 23500 Documentation and Manuals

BioGuard Item 23500 Suggested Applications

  • All Concrete, Colored Plaster and Painted Pools
  • All Inground Vinyl Liner Swimming Pools
  • All Aboveground Swimming Pools

Shipping Rates

Orders Under $50 $5.00
Orders Over $50 FREE
3-Day Premium add $50.00
2-Day Premium add $65.00

Shipping Policies:

  • We do not ship to PO Boxes or APO / PPO Addresses
  • We only ship orders to the 48 contiguous United States
  • Chemicals, pool paint, and some oversized items, will only ship via ground service.
  • Items shipped via Freight Service, such as pool heaters, will only ship via ground service.
  • All orders shipping to Maryland will incur a 6% sales tax charge
  • Some items, including hazmat, may require a Direct Signature upon delivery.
  • Orders containing small and light-weight items may ship via FedEx SmartPost or USPS.

Order Returns

You may return an item sold to you by up to 30 days after purchase. The product must be in good condition, unused, in original packaging, and must have all parts, accessories and paperwork; returns without these requirements and/or guidelines will not be accepted.

If a delivery attempt is unsuccessful on order requiring a direct signature, a 15% restock fee may be applied should the order be returned to by the carrier.

Any claims to missing parts, items or damaged goods for any orders must be made within 30 days of delivery date. We are not able to credit your shipping and handling fees if the wrong product was ordered due to customer error. However, if you received the wrong products due to an error on our behalf, we will pay for the return services fees and you will receive a full refund or exchange.

To return an item to, please access your account and fill out our simple return authorization request. You will then be issued a Return Merchandise Authorization (RMA) number and return instructions. Any items returned without an RMA number will be refused. We will process your refund upon receipt of the returned items.

Products that cannot be returned:

  • Pool Chemicals
  • Pool Cleaners *
  • Special Orders
  • Pool Liners
  • Pool Paint
  • Deck Coatings & Paint
  • Pool Heaters *
  • Pool Pumps *
  • Pool Filters *
  • Pool Ladders *
  • Pool Chlorinators *
  • Custom Manufactured Safety Covers
  • Stock Covers that are Ordered and for the Incorrect Pool Size

Concealed damage on any item must be reported within 3 business days. Please email any information regarding concealed damage to Please reference your order number in all order related email correspondence.

* These items may be returned under strict circumstances. The product must not have been used, installed, or attempted to have been installed. All products must include original paperwork, parts & accessories, and everything accompanied with the product. These products require additional return information prior to being shipped back.

Customer is responsible for any/all return shipping charges. Some returns may have a 15% restock fee that will be deducted from your refund. Restock fees are generally applicable when the returned product is found to not be in re-sellable condition, has been installed or attempted to be installed, or does not include all original items, the return will be refused.

Please call 800-4MY-POOL if you have questions regarding this return policy.

Thank you for shopping!

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